John Simm stars in this shocking television miniseries, inspired by and based on in-depth research into real-life events. Two sisters, Elena (Anamaria Marinca) and Vara (Maria Popistasu), believe they are leaving their home in Moldova for a better life in London when they take up job offers. In actual fact, they have been sold into the dark and violent underworld of sex trafficking and are forced to work as sex slaves. Daniel Appleton (Simm) is a researcher and investigator for a charity trying to help free women from their unscrupulous kidnappers. But when Daniel starts digging deeper into Elena and Vara's plight, he uncovers a link to a US contractor for the international peacekeepers in Bosnia. Before long, the strands of the conspiracy are starting to unravel, with shocking results.